MQTT control of 8 channel relay

Hardware
1

I have 3 boards and have been using them for a long time, actually Jan of 2014. I bought the n-button software and they have worked just fine since then. Since N-Button wont handle MQTT I started looking around and decided to pick up and learn Home Assistant and would like to continue to use these boards and maybe even get more.

The boards I have:
ZUXPR810ProXR_USB - Industrial Relay Controller 8-Channel SPDT + UXP Expansion Port
USCS48 - UXP 48-Channel Contact Closure Detector Expansion Board connected to the 8 channel UXP port

ZUXPSR1610PROXR_ETHERNET - Industrial Relay Controller 16-Channel SPDT + UXP Expansion Port

I came back to your website a couple months ago and saw you have MQTT access now. But I don’t see much documentation.

I see on Relay Controller 8-Channel General Purpose SPDT + 8 Channel ADC ProXR Lite - store.ncd.io
it lists * Use MQTT to Talk to this Device from the Internet when using our New WiFi Module
DO I have to buy the WiFi module or can I use ethernet? I don’t like wireless when I can avoid it.

If I buy an ethernet module I should be able to replace the USB module on the ZUXPR810ProXR board and then have complete control / access to the 8 relays and reading of the 48-Channel Contact Closure UXP Board? Is there any documentation on accessing this ethernet module and setting it up to send and receive MQTT messages? I already have a MQTT gateway with over 200 devices.

I saw you posted ProXR Quick Start Guide - ncd.io
Will I just send TX commands via mqtt message load? or is there some other functionality that is present?

EDIT:
WiFi Communications Module with Bluetooth USB MQTT - store.ncd.io
this is the only mention of MQTT that i can find. Is it software installed on the esp, and thus not compatible with the ethernet module? Ethernet to Serial Communications Module - New Gen 3 - store.ncd.io

2

Hi @Patrick_P,

This WiFi module supports MQTT and can be plugged into your controllers:

Currently this is the only solution we offer for the devices you have. We do not have any Ethernet interface modules.

Please take a look and let us know if you have any questions.

Thank you,
Travis Elliott

3

Thanks for your response. I think I will order 1 today to test out.

Can you answer about the UXP control? If I plug in the wifi module into the 8 channel relay with the 48 contact closures, will I be able to receive messages from all the 48 contact closures on the UXP attached board?

4

Hi Patrick,

The module really does not have handling for monitoring inputs. The reason is that monitoring inputs requires querying the inputs. If you do this over MQTT the commands/responses will be slow so it really wouldn’t work well for that application. It does work for controlling relays pretty well though.